Study the equation and identify the valency of the elements. What can you infer from the above? (Assume X and Y stand for different metals).

$3 X C l_{2} + Y_{2} (S O_{4})_{3} \to 3 X S O_{4} + 2 Y C l_{3}$

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Solution

$3 X C l_{2} + Y_{2} (S O_{4})_{3} \to 3 X S O_{4} + 2 Y C l_{3}$

$X C l_{2} \to$ valency of $C l$ is 1, As $X$ is attached with two $C l$ atoms having valency 1 each in $X C l_{2}$ , the valency of $X$ must be 2.
Valency of X=2
$Y_{2} (S O_{4})_{3} \to$ valency of $(S O_{4})$ is 2, As $Y$ is attached with three $C l$ atoms having valency 1 each in $Y C l_{3}$ , the valency of $X$ must be 3.

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Study the equation and identify the valency of the elements. What can you infer from the above? (Assume X and Y stand for different metals).3XCl2+Y2(SO4)3→3XSO4+2YCl3

3XCl2+Y2(SO4)3→3XSO4+2YCl3XCl2→ valency of Cl is 1, As X is attached with two Cl atoms having valency 1 each in XCl2, the valency of X must be 2.Valency of X=2Y2(SO4)3→valency of (SO4) is 2, As Y is attached with three Cl atoms having valency 1 each in YCl3, the valency of X must be 3.

Study the equation and identify the valency of the elements. What can you infer from the above? (Assume X and Y stand for different metals).

$3 X C l_{2} + Y_{2} (S O_{4})_{3} \to 3 X S O_{4} + 2 Y C l_{3}$